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  1. #1
    Join Date
    Mar 2005
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    NYC
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    E71 X6 4.4L "BatMobile"

    2012 x6 4.4 started chirping about battery - dealer quoted $650

    $350 for the battery and now its no longer plug and play but needs to be mapped to the car!?

    anyone else have a work around?

  2. #2
    Join Date
    Aug 2017
    Location
    Northborough MA
    Posts
    6
    My Cars
    2009 Z4 30si
    I have a 09 z4 (E89) and i received a quote of ~350 for a new battery( BMW dealer). they also said it had to be paired to the car... what ever that means

  3. #3
    Join Date
    Jan 2004
    Location
    (northeast) Indiana
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    19,321
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    15 650ix GC & 14 X5 50i
    Quote Originally Posted by eddieb022000 View Post
    $350 for the battery and now its no longer plug and play but needs to be mapped to the car!?

    anyone else have a work around?
    The battery doesn't need to be purchased from the dealer...just shop local automotive places/departments for a 49/H8 class size AGM battery. It will have the specs you need. If the X6 is like the X5...you can also look at the 95R/H9 battery, too...that one can be found with 105 AH specs...again, usually less expensive than the BMW branded battery. But I don't know that much about the X6's battery compartment...if it's smaller than the X5...you'll need to stay with the 49/H8 (see chart below for battery width/length for the AGM 49/H8 & 95R/H9..as well as the CCA/RC/AH/CA ratings:


    The battery will need to be registered though...because you have an IBS (intelligent battery sensor). See info below which should help bring you up to speed about this sensor, its technology, and how it works. If you do a google search for "Carly for BMW" or search the hundreds of threads here and other BMW forums for Carly...you can see how simple it is to buy your own diagnostic tool to do a simple battery registration.




    The East Penn battery MFG chart below shows examples of what the common specs of the various battery class sizes are. Other battery manufacturers class sizes will have very similar specs...they may very by only a few points...but they all are pretty similar in specs.



    {Example of East Penn 49/H8 AGM battery sold @ Sam's Club under the "Duracell" brand name...pics taken in 2014 so price may vary}



    Last edited by Qsilver7; 11-29-2017 at 10:14 AM.
    Become a BMW CCA member! Click HERE to join and feel free to use my BMW CCA member #191509 as a referral.

    2015 650ix GC (Moonstone/Cohiba Brown) <<~>> 2014 X5 50i (Space Gray/Mocha)

  4. #4
    Join Date
    Mar 2005
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    NYC
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    My Cars
    E71 X6 4.4L "BatMobile"
    As usual great info from Q

    I guess what has me hesitate is that the car starts fine and all electronics work as they should, seems like the only issues are that after a while with the engine off but the radio on the car shuts down and sometimes the convenience door handle unlock won't work and I will need to press the key fob button.

    I guess best to have the battery tested but doesn't seem to be too bad

  5. #5
    Join Date
    Jan 2004
    Location
    (northeast) Indiana
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    My Cars
    15 650ix GC & 14 X5 50i
    Have you unlocked your instrument cluster? If so, you can use the simple cluster TEST 9 to check your battery's voltage (due it prior to starting a cold engine or approx 2 hours after shut down...so that any surface charge from the engine won't skew your results.
    Become a BMW CCA member! Click HERE to join and feel free to use my BMW CCA member #191509 as a referral.

    2015 650ix GC (Moonstone/Cohiba Brown) <<~>> 2014 X5 50i (Space Gray/Mocha)

  6. #6
    Join Date
    Jan 2016
    Location
    Ca
    Posts
    6,981
    My Cars
    2001 525it
    The battery is registered to the car and some of the bigger bmw's are being up graded to 105ah agm's

  7. #7
    Join Date
    Mar 2005
    Location
    NYC
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    986
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    E71 X6 4.4L "BatMobile"
    i havent unlocked it, i used to do that on my e38 but i have since forgotten how. i'll look up the procedure and report back. ty!

  8. #8
    Join Date
    Mar 2005
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    NYC
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    My Cars
    E71 X6 4.4L "BatMobile"
    got a new battery for ~$500 installed - what a freaking rip off. ~$300 for the battery (probably over paid by $100) but i needed it and they charged 1 hour of labor to install which is also a joke bc the "mapping" to the car took 30 minutes.

    so i convinced them to do a total software update since the car had its original 2012 software. well this took 5 hours!!!. hopefully bmw's new software will help with some of the lag issues from a stop that people have complained about - will keep the 3 active members on these boards posted ;-)

  9. #9
    Join Date
    Jan 2016
    Location
    Montreal/Cape Coral
    Posts
    207
    My Cars
    2012 X6 35i
    It took them about 5 hrs to update our 2012 X6 as well. You'll notice an improvement in the throttle lag, but in no way is it perfect.
    2007 FJ Cruiser (best vehicle to date)
    2012 X6 35i Sport
    2013 ML350 BT
    2019 4Runner

  10. #10
    Join Date
    Mar 2005
    Location
    NYC
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    My Cars
    E71 X6 4.4L "BatMobile"
    Yea it's a bit better, but definitely noticeable - still peeved about how much the battery and install was but the upgrading the software for free made up for it a bit

  11. #11
    Join Date
    Jan 2016
    Location
    Montreal/Cape Coral
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    My Cars
    2012 X6 35i
    I'm curious; If you were to jumper a temporary 12V battery to the terminals while swapping batteries, would that trick the system into not realizing the battery had been replaced? I know that I'm surely over-simplifying, and this thread sure has clarified that why's and hows, but I was just wondering if my work-around would even work.
    2007 FJ Cruiser (best vehicle to date)
    2012 X6 35i Sport
    2013 ML350 BT
    2019 4Runner

  12. #12
    Join Date
    Mar 2005
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    NYC
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    E71 X6 4.4L "BatMobile"
    im not sure i understand peter. the reason they map the new battery to the car is, as i understand it, to let the car know that the new battery wont need as much charge as the old one. so it keeps the car from "frying' the new battery and supposedly makes the car more efficient as it dedicates less alternator power to charging the battery.

  13. #13
    Join Date
    Jan 2016
    Location
    Montreal/Cape Coral
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    207
    My Cars
    2012 X6 35i
    Wouldn't the sensors on the IBS let the car know what's what? I mean, it makes no freakin' sense. If you were to maintain 12v on the car while replacing the battery, the car "shouldn't" (in my simple mind) realize anything has changed. Just that the (new) battery isn't maxed out.
    2007 FJ Cruiser (best vehicle to date)
    2012 X6 35i Sport
    2013 ML350 BT
    2019 4Runner

  14. #14
    Join Date
    Jan 2007
    Location
    colorado springs, CO
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    58
    My Cars
    Chevelle, jeep
    I paid 250 installed at a firestone in Maxwell Alabama for my e70 35d


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